3. Each team will conduct the procedure a minimum of twice; if time permits, each member of the team will conduct the pr
Biotechnology: Applications in Agriculture Curriculum Guide: Biotechnology: Applications in Agriculture Unit: IV. Foundations of Genetic Engineering Unit Objective: Students will demonstrate an understanding of an aspect of genetic engineering by extracting DNA from a plant or animal source and analyzing the results in a written report. Show-Me Standards: 1.3, SC7 References: Biotechnology: Applications in Agriculture. University of Missouri-Columbia, Instructional Materials Laboratory, 1998. DNA Extraction From Kiwi. Office of Biotechnology. Iowa State University. Accessed October 31, 2003, from http://www.biotech.iastate.edu/publications/lab_protocols/DNA_Extractio n_Kiwi.html. DNA Extraction From Onion. Office of Biotechnology. Iowa State University. Accessed October 31, 2003, from http://www.biotech.iastate.edu/publications/lab_protocols/DNA_Extractio n_Onion.html. DNA Extraction From Onion – Teacher Guide “Chemical Version.” Biotech Project. University of Arizona. Accessed October 31, 2003, from http://biotech.biology.arizona.edu/labs/DNA_extraction_onion_teach.html. How to Extract DNA From a Banana. Biology. About, Inc. Accessed October 31, 2003, from http://biology.about.com/c/ht/00/07/How_Extract_DNA_Banana09629324 81.htm. How to Extract DNA From Anything Living. Genetic Science Learning Center. University of Utah. Accessed July 24, 2003, from http://gslc.genetics.utah.edu/units/activities/extraction/.
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Biotechnology: Applications in Agriculture Onion DNA Extraction. Solarwind.com. Accessed October 31, 2003, from http://www.solarwinds.com/users/neumann/onion_dna_extraction.htm. Teacher Guide: What is DNA? DNA Extraction From Kiwifruit. Biotech Project. University of Arizona. Accessed October 31, 2003, from http://biotech.biology.arizona.edu/labs/DNA_Kiwifruit_teacher.html. Instructional Strategies/Activities: • Students will engage in study questions in lessons 1 through 3. • Students will complete AS 1.1, Comparing Plant and Animal Cells; and AS 2.1, Mitosis and Meiosis. • Additional activities that relate to the unit objective can be found under the heading “Other Activities” in the following locations: p. IV-5 (2) and p. IV-21. Performance-Based Assessment: Students will form teams of three to extract DNA from a specific plant or animal material. After completing the process, each team will compare its findings with those of other teams and write a brief summary report of its findings. Assessment will be based on the application of proper laboratory procedure and technique, team cohesiveness, the time needed to conduct the procedure, the degree of success resulting from the procedure, and conclusions drawn from the comparison of findings.
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Biotechnology: Applications in Agriculture Unit IV—Foundations of Genetic Engineering Instructor Guide The instructor should assign the performance-based assessment activity at the beginning of the unit. Students will work toward completing the activity as they progress through the unit lessons. The assessment activity will be due at the completion of the unit. 1. Students will form teams of three to conduct the procedure to extract DNA material from a plant or animal source. 2. The teacher will provide, or assign responsibility for providing, the following to each team of students: Organic material (plant or animal sources) to be used as subjects of the DNA extraction procedure (NOTE: To promote diverse results, each team should analyze material from a different source.) Equipment and material to conduct the procedure A description or plan for extracting DNA, including maximum time for the procedure (NOTE: The teacher is advised to consult one or more of the web sites listed among the references for this performance-based assessment activity to determine the specific equipment, material, and procedure outline to supply to each team of students.) 3. Each team will conduct the procedure a minimum of twice; if time permits, each member of the team will conduct the procedure to duplicate and verify results. 4. After completing the procedure, each team will rotate through all other team stations and visually compare one of its samples to the one or two samples remaining at each team’s station. 5. After completing the rotation through all stations, each team will briefly summarize in a written report the results of its procedure and its findings during the visual comparison of other teams’ results. The report should be no more than two short paragraphs. 6. Assessment will be based on the quality of effort for the following factors: a. Application of proper procedure and technique during the laboratory exercise b. Team cohesiveness (i.e., how well team members worked together) c. The time needed to conduct the procedure d. The degree of success resulting from the procedure e. Conclusions drawn from the comparison of results
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Biotechnology: Applications in Agriculture Unit IV—Foundations of Genetic Engineering Student Handout 1. You will form a team with two other students to conduct the procedure to extract DNA material from a plant or animal source. 2. Your teacher will provide, or assign responsibility for providing, the following to your team: Organic material (plant or animal sources) to be used as subjects of the DNA extraction procedure Equipment and material to conduct the procedure A description or plan for extracting DNA, including maximum time for the procedure 3. Your team will conduct the procedure a minimum of twice; if time permits, each member of your team will conduct the procedure to duplicate and verify results. 4. After completing the procedure, your team will rotate through all other team stations and visually compare one of your samples to the one or two samples remaining at each team’s station. 5. After completing the rotation through all stations, your team will briefly summarize in a written report the results of your procedure and your findings during the visual comparison of other teams’ results. The report should be no more than two short paragraphs. 6. Assessment will be based on the quality of your effort for the following factors: a. Application of proper procedure and technique during the laboratory exercise b. Team cohesiveness (i.e., how well team members worked together) c. The time needed to conduct the procedure d. The degree of success resulting from the procedure e. Conclusions drawn from the comparison of results
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Biotechnology: Applications in Agriculture Unit IV—Foundations of Genetic Engineering Scoring Guide Laboratory Subject/Team Members___________________________________________________________________
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Criteria Proper procedure and laboratory technique were used Team members worked well together Amount of time for procedure was appropiate Procedure results were successful
0 Points Failed
1 Point Poor
2 Points Fair
3 Points Good
4 Points Excellent
Weight X 12.5
Failed
Poor
Fair
Good
Excellent
X 7.5
Failed
Poor
Fair
Good
Excellent
X 2.5
Failed
Poor
Fair
Good
Excellent
X 1.25
Conclusions from comparisons were Failed thorough and valid TOTAL
Poor
Fair
Good
Excellent
X 1.25
Comments:
Total
Final Assessment Total ________/100 pts.
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